/Engine/Plugins/Editor/BlueprintMaterialTextureNodes/Source/BlueprintMaterialTextureNodes/Public/BlueprintMaterialTextureNodesBPLibrary.h
Samples an array of values from a Texture Render Target 2D. Currently only 4 channel formats are supported. Only works in the editor
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Meta=(DisplayName="Render Target Sample Rectangle Editor Only", Keywords="Sample Render Target Rectangle"), Category=Rendering) static [TArray](API\Runtime\Core\Containers\TArray)< [FLinearColor](API\Runtime\Core\Math\FLinearColor) > RenderTarget_SampleRectangle_EditorOnly ( [UTextureRenderTarget2D](API\Runtime\Engine\Engine\UTextureRenderTarget2D) * InRenderTarget, [FLinearColor](API\Runtime\Core\Math\FLinearColor) InRect )